MC connector systems
Multi-Contact AG was founded in 1962 and is currently employing more than 700 staff. All manufacturing sites are ISO 9001-certified and therefore meet the highest quality demands. The components of the MC connector system for photovoltaics are designed to allow time-saving and safe serial and parallel wiring of PV modules for building-integrated and free-standing solar installations. For practical use the connector systems MC3 and MC4 are available, depending on the existing modules or inverters.
Multi-Contact AG becomes Stäubli Electrical Connectors AG
Since 2017 the internationally active Swiss connector manufacturer Multi-Contact AG has been trading as Stäubli Electrical Connectors AG.

MC4 connector systems

The interlockable MC4 connector systems:
- Diameter Ø 4 mm
- Rated current max. 30 A
- System voltage max. 1000 V
- Degree of protection, connected IP67
- Easy installation
- Locking system “Snap in”
- Protection class II
- Temperature range -40°C to +90°C
- TÜV Rheinland – type approved

MC3 connector systems

The proven MC3 connector systems:
- Diameter Ø 3 mm
- Rated current max. 30 A for 6 mm², max. 20 A for < 4 mm²
- System voltage max. 1000 V
- Degree of protection, connected IP65
- Protection class II
- Temperature range -40°C to +90°C
- TÜV Rheinland – type approved